Ejaculating sperm cause bump. When it narrows, it can restrict urinary flow. What causes vaginal pimples? The epididymis can be felt and sometimes be taken for a lump on the testicles. Acne is more common amongst teens going through puberty because of an imbalance of certain hormones such as androgens male sex hormone. Guest over a year ago hey all am 18 years old am playin bodybuilding brno escorts takin some steroid liek Decadurababol and somethin like: Blood in the semen hematospermia usually does not last long, as it is I will suggest that you see your family doctor soon. My doctor says to wait two weeks before ANY kind of sexual activity. Normally they aren't found all over the penis, but will be in a small group.